Why does my paysheet refresh put the paysheets in Processing status?

When you refresh paysheets, they remain in the Processing status until a background process completes. You can't change the paysheet during processing. Use View Processes to check the status of the process ID that's on the paysheet.

If the process gets stuck you can cancel it and then reject all the paysheets within the payment batch. Make sure the Reject action is done by a user with access to the action on the paysheet or by a user with the manager role.